Hello, I'm trying to use a moving average to optimize performance. However, I don't want to just choose an arbitrary period to begin with. Do you have any suggestions as to how to determine the proper period to begin with. What I'm asking is: Is there a mathematical formula to determine the appropriate period? For example: I'm measuring a cyclical sales and would like to forecast the next day using moving averages. I don't want to arbitrarily choose 30 days. I'd like to know if there is something else I could do. Thanks!